Table 1.
Patient characteristics and incidence of right PNI
| Overall | AFA-CB | POLARx-CB | P value | |
|---|---|---|---|---|
| n = 2555 | n = 1358 | n = 1197 | ||
| Age, years | 68.8 ± 10.9 | 69.4 ± 10.9 | 68.2 ± 10.8 | 0.005 |
| Female gender, n (%) | 815 (31.9%) | 428 (31.5%) | 387 (32.3%) | 0.691 |
| Body mass index, kg/m2 | 24.1 ± 4.0 | 24.3 ± 4.0 | 23.9 ± 3.9 | 0.013 |
| Paroxysmal AF, n (%) | 1670 (65.4%) | 897 (66.1%) | 773 (64.6%) | 0.459 |
| Structural heart disease, n (%) | 322 (12.6%) | 168 (12.4%) | 154 (12.9%) | 0.752 |
| CHADS2 score | 1.2 ± 1.1 | 1.3 ± 1.1 | 1.2 ± 1.1 | 0.01 |
| CHA2DS2-VASc score | 2.3 ± 1.5 | 2.3 ± 1.5 | 2.2 ± 1.5 | 0.012 |
| Left atrial diameter, mm | 38.9 ± 6.6 | 39.1 ± 6.3 | 38.6 ± 6.9 | 0.047 |
| Left ventricular ejection fraction, % | 61.8 ± 10.9 | 62.6 ± 10.9 | 60.9 ± 10.7 | <0.001 |
| Overall group, n = 2555 | ||||
| Phrenic nerve injury, n (%) | 64 (2.5%) | 18 (1.3%) | 46 (3.8%) | <0.001 |
| RSPV, n (%) | 39 (1.5%) | 9 (0.7%) | 30 (2.5%) | <0.001 |
| RIPV, n (%) | 22 (0.9%) | 9 (0.7%) | 13 (1.1%) | 0.394 |
| Unknown, n (%) | 3 (0.1%) | 0 (0%) | 3 (0.3%) | 0.205 |
| Symptomatic, n (%) | 22 (0.9%) | 2 (0.1%) | 20 (1.7%) | <0.001 |
| PAF group, n = 1670 | ||||
| Phrenic nerve injury, n (%) | 40 (2.4%) | 14 (1.6%) | 26 (3.4%) | 0.025 |
| RSPV, n (%) | 24 (1.4%) | 7 (0.4%) | 17 (2.2%) | 0.041 |
| RIPV, n (%) | 15 (0.9%) | 7 (0.4%) | 8 (1.0%) | 0.796 |
| Unknown, n (%) | 1 (0.1%) | 0 (0%) | 1 (0.1%) | 0.941 |
| Symptomatic, n (%) | 12 (0.7%) | 2 (0.2%) | 10 (1.3%) | 0.022 |
| Non-PAF group, n = 885 | ||||
| Phrenic nerve injury, n (%) | 24 (2.7%) | 4 (0.9%) | 20 (4.7%) | <0.001 |
| RSPV, n (%) | 15 (1.7%) | 2 (0.4%) | 13 (3.1%) | 0.006 |
| RIPV, n (%) | 7 (0.8%) | 2 (0.4%) | 5 (1.2%) | 0.384 |
| Unknown, n (%) | 2 (0.2%) | 0 (0%) | 2 (0.5%) | 0.443 |
| Symptomatic, n (%) | 10 (1.1%) | 0 (0%) | 10 (2.4%) | 0.003 |
Values are reported as the mean ± standard deviation or number of patients (%), unless otherwise noted. The P values indicate the comparison between the AFA-CB and POLARx-CB groups.
AF, atrial fibrillation; n, number; PAF, paroxysmal atrial fibrillation; RI(S)PV, right inferior (superior) pulmonary vein.